# Problem: A student standing on a cliff that is a vertical height = 8.0 m above the level ground throws a stone with velocity Vo = 25 m/s at an angle = 22° below horizontal. The stone moves without air resistance: use a Cartesian coordinate system with the origin at the stone's initial position. Part (a) With what speed, vf in meters per second, does the stone strike the ground?

###### FREE Expert Solution

In this problem, we'll use the kinematic equation:

$\overline{){{{\mathbit{v}}}_{{\mathbit{f}}}}^{{\mathbf{2}}}{\mathbf{=}}{{{\mathbit{v}}}_{{\mathbf{0}}}}^{{\mathbf{2}}}{\mathbf{-}}{\mathbf{2}}{\mathbit{g}}{\mathbf{∆}}{\mathbit{y}}}$

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###### Problem Details

A student standing on a cliff that is a vertical height = 8.0 m above the level ground throws a stone with velocity Vo = 25 m/s at an angle = 22° below horizontal. The stone moves without air resistance: use a Cartesian coordinate system with the origin at the stone's initial position.

Part (a) With what speed, vf in meters per second, does the stone strike the ground?